Revelation of graphene-Au for direct write deposition and characterization

Bhandari, S and Melepurath, D and Joshi, A G and Saxena, A P and Srivastava, A K (2011) Revelation of graphene-Au for direct write deposition and characterization. Nanoscale Research Letters, 6. pp. 1-7. ISSN 1931-7573

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Abstract

Graphene nanosheets were prepared using a modified Hummer's method, and Au-graphene nanocomposites were fabricated by in situ reduction of a gold salt. The as-produced graphene was characterized by X-ray photoelectron spectroscopy, ultraviolet-visible spectroscopy, scanning electron microscopy, and high-resolution transmission electron microscopy (HR-TEM). In particular, the HR-TEM demonstrated the layered crystallites of graphene with fringe spacing of about 0.32 nm in individual sheets and the ultrafine facetted structure of about 20 to 50 nm of Au particles in graphene composite. Scanning helium ion microscopy (HIM) technique was employed to demonstrate direct write deposition on graphene by lettering with gaps down to 7 nm within the chamber of the microscope. Bare graphene and graphene-gold nanocomposites were further characterized in terms of their composition and optical and electrical properties.

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IITH Creators:
IITH CreatorsORCiD
Melepurath, DUNSPECIFIED
Item Type: Article
Uncontrolled Keywords: Au particles; Direct-write deposition; Fringe spacing; Gold salts; Helium ion; In-situ; Optical and electrical properties; Ultrafine
Subjects: Chemistry > Crystallography
Divisions: Department of Chemistry
Depositing User: Team Library
Date Deposited: 29 Oct 2014 07:15
Last Modified: 28 Aug 2017 10:09
URI: http://raiith.iith.ac.in/id/eprint/509
Publisher URL: https://doi.org/10.1186/1556-276X-6-424
OA policy: http://www.sherpa.ac.uk/romeo/issn/1931-7573/
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